Alright, let's work through 20797682 times 27328697 step by step
20797682 × 27328697 = 27328697 × (20797682)
+ 27328697 × 2 yielding 54657394
+ 27328697 × 80 which equals 2186295760
+ 27328697 × 600 what gives us 16397218200
+ 27328697 × 7000 producing 191300879000
+ 27328697 × 90000 yielding 2459582730000
+ 27328697 × 700000 which equals 19130087900000
+ 27328697 × 0000000 giving us 0
+ 27328697 × 20000000 what gives us 546573940000000

= 568373549680354
